Videos: Teen battling cancer covers ‘Roar’, Katy Perry responds

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Olivia Wise is battling brain cancer, and, even though she can no longer stand, she went to a recording study to cover the Katy Perry song “Roar.”

The video of Wise’s rendition of “Roar”  went viral, and Perry herself responded to Wise with a message of her own. See the video above for the song and the video below for Perry’s reply.

Related story: Viral video: Children’s hospital sings ‘Roar’